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Finding the Fourth Proportional to 163,149.85, 225,143.34 and 90,548.51

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Solution

The fourth proportional to 163,149.85, 225,143.34 and 90,548.51 is: 124,955.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,149.85 : 225,143.34 = 90,548.51 : x
  2. Step 2: Convert to fraction form
    163,149.85/225,143.34 = 90,548.51/x
  3. Step 3: Cross multiply
    163,149.85x = 225,143.34 × 90,548.51
  4. Step 4: Simplify right side
    163,149.85x = 20,386,393,973.42
  5. Step 5: Solve for x
    x = 20,386,393,973.42/163,149.85
  6. Step 6: Final answer
    x = 124,955.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.